REHABILITATION OF JABBAN HYDROELECTRIC POWER STATION
Location The project area is located in the District of Malakand, NWFP of  Pakistan at a distance of 45 km form the city of Mardan.
Description

Jabban Hydroelectric Power Station is located in District Malakand, KPK Province of Pakistan, at a distance of 45 km from the city of Mardan and 7 km upstream of 20 MW Dargai Hydroelectric Power Station. Jabban Hydroelectric Power Station receives water from Upper Swat Canal System through Benton and barkit tunnels. The discharge capacity of Barkit tunnel is 34 m3/sec which is feeding Jabban and Dargai Hydropower Projects.

Since its commissioning in 1937 with an initial installed capacity of 9.6 MW (3.2 MW each), and addition of 10 MW (2 units of 5.0 MW  each), Jabban Hydroelectric Power Station generated billions of units of cheap electricity. The 70 year ld power house was badly damaged due to a fire incident on 12-11-2006. The extent of damage was such that it was not possible to restore operation of the existing units. Moreover, the plant equipment had already ouitilived its life. The situation necessitated to carry out Rehabilitation of Jabban Hydroelectric Power Station on "Fast Track Basis" by installation of new machines of higher efficiency at the same site.

Project Objectives

 i) Rehabilitation of the existing Jabban Power Station to maintain the utilization of   cheap hydropower potential at Jabban and to provide more reliable and consistent power to the National Grid for at least another 50 years.
 ii)  Enhancement of the capacity of Power Station from 19.6 MW to 22.0 MW by using more efficient turbines and other electro-mechanical equipment.

Salient Technical Features (After Rehabilitation)
Installed Capacity 22 MW (4 Units of 5.5 MW each)
Annual Net Electrical Output 122 GWh
Design Discharge 34 m3 /sec (8.5 m3 / sec per unit)
Rated Net Head 76.8 m
Generation Voltage 11 KV
Transmission Voltage 132 KV
Salient Financial Features
Project Cost as per revised PC-I Total      Rs.3753.571 million
Foreign   Rs. 1649.480 million
Local      Rs. 2104.091 million
Generation cost per unit Rs. 3.25
Cost per KW of installed capacity Rs. 169, 745 (US$ 1997 / KW)
Benefit Cost Ratio 1: 2.14
Project Features
Consultant M/s NESPAK
Contractor JV of Habib Rafique Ltd. (Pakistan) & Central China Power Group (CCPG) China
Sub Contractor
  - Powerhouse M/s Zhejiang Jinlun Electro-mechanic Co. Ltd. Chine.
  -  Sub Station M/s Areva T&D Pakistan (Pvt. ) Ltd.
Financing AFD (France) -  Euro 25.0 Million
Contract value Foreign:  US$ 17.904,901
Local:      Rs. 786.767 Million
Date of Commencement 19-02-2010
Completion period 21 months from Order to Commence.
Commercial Operation Date (Final) As per Contractual Plan
As Expected 		18-11-2011
05-04-2013
Financial Progress 18.64%
Work Progress Power House Area
i)  Fixing of Steel bars and formwork at Penstock entrance to Power House and formwork for top slab of
    Draft in Unit # 3&4 are in progress.
ii)  Excavation of rock and lean concreting of drainage pit in unit # 3&4 and also installation of drainage
     pipe of 150 mm dia leading from drainage pit to Draft Tube in both units completed.

iii)  Excavation of rock for drainage pit in Unit # 1&2 and drilling of holes for #10 rebars at Penstock
      entrance to Power House in Unit # 2 is in progress.
iv) Dismantling of top slab of Draft Tube of old unit No. 1 for permanent blocking with concrete is in
     progress.
v) Chipping of existing Tail Race Floor in Unit # is in progress. .

Penstock
i)  Sub Contractor for Supply, Installation & Commissioning of Penstocks approved. .
ii) Sizing, thickness and material approved by the Consultants material being imported.
iv) Detail Design/Drawings etc.  are in approval stage.

Forebay
i) Chipping of existing concrete floor (slope portion) in Bay# 172 and front face wall in Bay # 02 in
progress.
ii) Grouting of anchorage dowels in existing concrete piers in Bay # 1&2 is in progress.
iii) Fixing of steel in floor of Bay #1 completed.

132 KV Sub Station
Significant progress has been achieved at site during the month after receipt of some assignment of E&M equipment.
i)  Grouting of anchor bolts in 50 Nos. Concrete foundations and installations of steel structures on the
    same foundation fro electrical equipment completed. .
ii)  Erection of 12 Nos. Gantry towers along with horizontal beam completed. However final tightening and
     grouting of the same is in progress.
iii) Some locally manufactured items for 132 KV Switchyard such as cable Trays/Ladders, Steel channels
    and treaded rods etc. which were received at site during galvanization from WAPDA Research and
    Testing Laboratory (RTL) Faisalabad. Test Results received and thickness. Site delivery certificate
    issued by M/s NESPAK.
iv) Excavation and leveling of ground for installation of earthing mesh is in progress.
v) Two nos. consignment of the following material has been received at site on 30 & 31-01-2012 which is
   under site inspection. 
a. Inductive Voltage Transformer
b. Current Transformers
c. Capacitor Voltage Transformers.

Updated as on 31.03.2012